Mold for concrete posts.



PATENTED DEC. 18, 1906.

W. J. MOORE.

MOLD FOR CONCRETE POSTS.

APPLICATION TILED APB/.11, 1906.

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W'AIJTER J. MOORE, OF STERLING, ILLINOIS.

MOLD FOR CONCRETE POSTS- Specification of Letters Patent.

Patented Dec. 18, 1906.

Appli tion filed April 11, 1906- Serial No. 311,185.

To all whom it may concern:

Be it known that I, WALTER J. MOORE, a citizen of the United States,residing at Sterling, in the county of Whiteside and State of Illinois,have invented certain new and useful Improvements in Molds for ConcretePosts; and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the figures of reference markedthereon, which form a part of this specification.

My invention relates to molds for concrete posts, and is speciallydesigned for the construction of posts which are provided with a seriesof transverse openings in which are held wire or other fastenings bywhich the wires of the fence are held in position.

My device is simple in construction and operation and is speciallyadapted for use at or near the place where the posts are to be used.

The improvements and advantages thereof will more fully appear in thefollowing specification, reference being had to the accompanyingdrawings, wherein Figure 1 is a perspective showing one of the parts ofthe mold. Fig. 2 is a horizontal cross-section centrally of the mold.Fig. 3 is a vertical section in the line as x of Fig. 2. Fig. 4 is anenlarged detail showing the strip 5. F i 5 illustrates a post of thekind produced by my device. Fig. 6 is an enlarged detail showing one ofthe pins 8 and cylinder 16 thereon. Figs. 7 and 8 are cross-sectionsshowing modified forms of my device.

The mold is formed of two semicylindrical sections 1 and 2, preferablyconstructed of sheet metal and provided on their adjacent edges withoutwardly-turned flanges 3 3. The part 1 is centrally provided with alongitudinal channel 4, in which is held a strip 5 by means of two ormore bolts 6 passing through the rear wall of the channel 4 and securedon the outside thereof. The strip 5 is preferably formed of metal and isprovided with a plurality of perforations 7, in a desired number ofwhich are held a series of pins 8, which extend transversely of the moldand are supported at their free ends by perforations in the section 2corresponding to those in the strip 5.

When the mold is complete, the form thereof is slightly tapering, so asto produce a post larger at one end than at the other, and the sections1 and 2 thereof may be held together by a plurality of metal rings 9engaging the edges of the flanges 3 and the outer face of the channel 4.That part of the rin which is opposite to the channel 4 can be b ockedor wedged to hold it in place, if desired.

In the small end of the mold is removably secured a plate 10, providedwith a plurality of small perforations 1 1, in which are secured thelower ends of wires 12, the upper ends of I which are supported by aperforated crossplate- 13, secured in the upper end of the mold by meansof hooks 14, supported on the upper edge of the mold and attached attheir lower ends to the ends of such crossplate. The wires 12 arepreferably four in number; but any desired number'thereof may beemployed, the chief purpose of such wires being to form a web orreinforcement for the concrete of which the post is formed, as is commonin posts of that character.

To use the device, the strip 5 is first provided with the desired numberof pins 8, which are inserted in the perforations therein from the rearof the strip. Such strip is then secured in position in the channel 4.The plate 10 is then secured in place and the wires 12 fastened thereinand engaged at their upper ends by thecross-plate 13, whereby such wiresare held longitudinally of the mold, so as to be entirely surrounded bythe concrete. The section 2 is then attached to the part 1 and suchparts held together by the rings 9. The concrete in a semiliquid stateis then poured into the top of the mold until the same is filledtherewith. When the cement in the mold has nearly attained to the heightof the cross-plate 13, such crossplate is removed, the cement forming asufficient support for the wires 12. When the concrete has suflicientlyset, the mold is laid in a horizontal position in blocks or cradles 15,with the section 1 uppermost. The plate 10 is then removed and the rings9 detached from the mold, after which the section 1 is raised, drawingthe pins 8 from the completed post. If desired, the strip 5 can bedetached from the part 1 before such part is removed, the section 1being firstdisengaged, leaving the pins 8 and strip 5 attached theretostill in engagement with the post. Such strip and pins are then removed,or the pins can be independently withdrawn from their positions in theconcrete.

To render the removal of such pins less difficult in case of a tendencyof the cement to adhere thereto before it has fully set, each of saidpins may be provided with a thin shell or cylinder 16, which remains inthe post when the pin is withdrawn and is itself removed when the posthas more fully hardened.

In Fig. 5 is shown a post 17, having a se ries of perforations 18, thenumber and position of which are determined by the number and locationof the pins 8 in the strip 5. For

. some kinds of fencing, such as woven-wire fencing possessing numerousstrand -wires, a greater number of perforations would be required, andin use with some fences a comparatively small number would be needed. Incase the posts were being constructed at the place where they wereintended to be used, it could be determined beforehand, re.- gard beinghad to the style of fencing to be employed, how many perforations 18would be provided, and the location thereof. As a portion of the postwill be underground, it is apparent that the strip 5 need not extend theentire length of the channel 4 and that part of the channel which is notfilled thereby may be provided with a permanent solid strip similarthereto, if desired.

In Figs. 7 and 8. are shown modifications whereby half-round orrectangular posts can be constructed. As shown in Fig. 7, the section 1is employed, being held in a horizontal position by means of a suitablenumber of cradles 19. Shorter pins 8 are used, so as to extend only to apoint in line with the edges of the mold. The section 1 is then filledwith the concrete mixture, which need not be of the semiliquid statebefore mentioned, but may be in condition so that it may be tampedduring the operation. The materialis supplied until the mold is full,whereupon it is smoothed until level with the edges of the mold. A plateor board 20 is then laid thereon and the mold inverted upon a smoothsurface, whereupon the part 1 and pins 8 can be removed, as beforedescribed, and the post left to harden. The formation of a square orrectangular post is similar, the part 1 being replaced with athree-sided section 21, also provided with a channel 4 and pins 8,extending to the upper side of the mold. The mold is horizontallysupported by a suitable number of cradles 22, and after being filledwith concrete and having such concrete smoothed until level with theupper edges thereof the mold is provided with a plate 23, after which itis inverted and the part 21 raised, as in the preceding operation,withdrawing the pins 8 from the cement.

In the construction of the half-round or rectangular posts it will benecessary to use plates of corresponding shape in cross-section at eachend of the mold, but it will not be necessary to provide supports forthe wires 12 therein, as such wires can be merely laid in the cement asthe work progresses. The use of such wires in the construction of eitherform of post is optional. Where the material from which the post isformed is to be tamped, as in the modified forms, it is not necessary touse the shells 16 on the pins 8, as the concrete does not adhere to thepins as it does in the semiliquid state. The thickness of the strip 5 isthe same as the depth of the channel 4, so that the inner face of thestrip is flush with the inner wall of the section 1. Bythis means aperfectly-smooth face is produced on the post without any channel orindentation such as would result if the strip projected into the post inany degree.

.VVhat I claim as my invention, and desire to secure by Letters Patentof the United States, is i 1. A mold for concrete posts, comprising twosemicylindrical sections, adapted to be detachably secured together; achannel longitudinally of one of said sections a strip removablysupported in such channel, and provided with a plurality ofperforations; and a series of pins, held at one end in a desired numberof said perforations, and at their opposite ends in the opposite wall ofthe mold; substantially as shown and described.

2. A mold for concrete posts, comprising two semicylindrical sections,adapted to be detachably secured together a channel longitudinally ofone of said sections; a strip removably supported in such channel, andprovided with a plurality of perforations; a series of pins, held at oneend in a desired number of said perforations, and at their opposite endsin the opposite walls of the mold; and means for supporting a pluralityof wires longitudinally of the mold, substantially as shown and setforth.

3. In a device of the class named the combination of the section 1, 1provided with flanges 3 the section 2, having corresponding flanges 3;the channel 4, longitudinally of the section 1; the strip 5, removablysecured in the channel 4, and provided with a series of perforations 7;a plurality of pins 8, supported in a predetermined number of theperforations 7; the plate 10, secured in one end of the mold; and meansfor holding the sections 1 and 2 detachably together, substantially asand for the purpose shown.

4. In a device of the class named, the combination of the section 1,provided with flanges 3 the section 2, having similar flanges 3; thechannel 4, longitudinally of the section 1 the strip 5, removablysecured in the channe] 4, and provided with a series of perforations 7 aplurality of pins 8, supported in a desired number of the perforations7; the plate 10, provided with perforations 11; the cross-plate 13,removably supported in the upper end of the mold; and means for holdingthe sections 1 and 2 detachably together; substantially as shown anddescribed.

5. In a device of the class named, the combination of thesemicylindrical sections 1 and 2, adapted to be detachably heldtogether; the channel 4 longitudinally of the section 1; the strip 5,removably held in the channel 4, and provided with a plurality ofperforations 7; a series of pins 8, secured at one end in a desirednumber of the perforations 7, and at the other end in the opposite wallof the mold; and a series of cylinders 16 loosely seated upon the pins8, substantially as shown and for the purpose mentioned.

6. In a mold for concrete posts, the combination of the section 1,provided with a longitudinal channel 4; the strip 5, removably securedin the channel 4 and provided with a plurality of perforations 7; aseries of pins 8, supported in the erforations 7 and extendingtransversely o the section 1 and means for closing the ends of saidsection, substantially as shown and set forth.

In testimony whereof I affiX my-signature in presence of two Witnesses.

WALTER J. MOORE.

Witnesses:

EMMA V. STABLER, ELMER A. FINE.

